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[USN-8526-2] libheif vulnerabilities

Posted on 14 July 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8526-2
July 14, 2026

libheif vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS

Summary:

Several security issues were fixed in libheif.

Software Description:
- libheif: An ISO/IEC 23008-12:2017 HEIF and AVIF file format decoder and encoder

Details:

USN-8526-1 fixed vulnerabilities in libheif. This update provides the
corresponding updates for CVE-2026-47709 and CVE-2026-47714 in
Ubuntu 24.04 LTS.

Original advisory details:

Junyi Liu discovered that libheif had a null pointer dereference in its
image tiling interface. An attacker could possibly use this issue to
cause a denial of service. (CVE-2026-47709)

Calvin Young and Enoch Chow discovered that libheif had an integer
overflow in its inline mask size calculation. An attacker could
possibly use this issue to cause a denial of service or obtain sensitive
information. (CVE-2026-47714)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.04 LTS
heif-gdk-pixbuf 1.17.6-1ubuntu4.6
heif-thumbnailer 1.17.6-1ubuntu4.6
libheif-dev 1.17.6-1ubuntu4.6
libheif-plugin-aomdec 1.17.6-1ubuntu4.6
libheif-plugin-aomenc 1.17.6-1ubuntu4.6
libheif-plugin-dav1d 1.17.6-1ubuntu4.6
libheif-plugin-ffmpegdec 1.17.6-1ubuntu4.6
libheif-plugin-j2kdec 1.17.6-1ubuntu4.6
libheif-plugin-j2kenc 1.17.6-1ubuntu4.6
libheif-plugin-jpegdec 1.17.6-1ubuntu4.6
libheif-plugin-jpegenc 1.17.6-1ubuntu4.6
libheif-plugin-libde265 1.17.6-1ubuntu4.6
libheif-plugin-rav1e 1.17.6-1ubuntu4.6
libheif-plugin-svtenc 1.17.6-1ubuntu4.6
libheif-plugin-x265 1.17.6-1ubuntu4.6
libheif1 1.17.6-1ubuntu4.6

In general, a standard system update will make all the necessary
changes.

References:
https://ubuntu.com/security/notices/USN-8526-2
https://ubuntu.com/security/notices/USN-8526-1
CVE-2026-47709, CVE-2026-47714

Package Information:
https://launchpad.net/ubuntu/+source/libheif/1.17.6-1ubuntu4.6

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